It is appropriate to fill the skin with blood during cupping, and it is not good if there is a situation where blood is drawn. Cupping method, refers to the use of the can as a tool, with the burning method, the air inside the can is expelled, and then the can is adsorbed on the patient’s skin, which has the effect of treating the disease. This treatment method, has the efficacy of activating blood and qi, dredging the meridians and collaterals. When performing cupping, attention should be paid to observing the patient’s skin, so that the skin is congested with blood, redness, or even the appearance of ecchymosis is appropriate. If blood is drawn out during the operation, it means that the patient’s skin has been damaged, which is not good. If patients need cupping, they should go to the hospital in time to receive regular treatment to ensure their safety.